When was the earthquake measuring 7.8 recorded？

Researchers have found that______.

A．the quantity of cracks decides the speed of an earthquake

B．the larger amount of pressure, the faster the transmission signals are

C．the larger the magnitude is, the longer pre-seismic signals an earthquake have.

D．the stress signal is detectable with two sensors a few yards away from each other

A、when it is dispatched

B、when it reaches the offeree

C、when it is withdrawn

D、when it is revoked

When, the slope is the deepest.

A.when; which

B.which; when

C.what; that

D.on which; when

A.When they feel powerful

B.When they are sick

C.When they are uncomfortable

D.When they are comfortable

When X is NOT stochastic,is equivalent to.

A、When will we begin the program

B、When we will begin the program

C、When beginning the program

D、When begin the program

When is the bank open？

A．

B．

C．