Flow restrictions often begin in the middle of the route, as controllers will ______ aircraft landing in the same destination so that when the aircraft are close to their destination they are sequenced. A: control B: position C: instruct D: monitor

to begin or cause something to begin: ______

________, you must continue. A: Once you begin B: When you begin C: Once you will begin D: While you begin

How to begin a topic? We can begin with __________.

When will the sale begin The sale will begin from ______.

PL/SQL块由（ ）组成 A: DECLARE BEGIN END B: BEGIN END C: EXCEPTION BEGIN END D: DECLARE BEGIN EXCEPTION END

The position of a comatose patient is( ) A: active position B: passive position C: compulsive position D: rolling position E: None of the above

The ‘tooth position’ refers to () A: The intercuspal position B: The retruded contact position C: The mandibular postural position D: The muscular contact position

下列样式代码中,可以实现绝对定位模式的是()。A、position:static;B、position:fixed;C、position:absolute;position:relative A: position:static; B: position:fixed; C: position:absolute; D: position:relative;

20. When still a young man, he was appointed ( ). A: that position B: to that position C: on that position D: of that position